package com.example.admin.fragmentbestpractice;

import android.os.Bundle;

import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class NewsTitleFragment extends Fragment {
    private boolean isTwoPane;

   class NewsAdapter extends RecyclerView.Adapter<NewsAdapter.ViewHolder>{
    private List<News> mNewsList;
    class ViewHolder extends RecyclerView.ViewHolder{
        TextView newsTitleText;
        public  ViewHolder(View view){
            super(view);
            newsTitleText =(TextView) view.findViewById(R.id.news_title);
        }
    }
    public NewsAdapter(List<News> newsList){
        mNewsList=newsList;
    }

       @NonNull
       @Override
       public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
           View view=LayoutInflater.from(parent.getContext()).inflate(R.layout.news_item,parent,false);
           final  ViewHolder holder=new ViewHolder(view);
           view.setOnClickListener(new View.OnClickListener() {
               @Override
               public void onClick(View v) {
                   News news=mNewsList.get(holder.getAdapterPosition());
                   if(isTwoPane){
                       NewsContentFragment newsContentFragment=(NewsContentFragment) getFragmentManager().findFragmentById(R.id.news_content_fragment);
                       newsContentFragment.refresh(news.getTitle(),news.getContent());
                   }else {
                       NewsContentActivity.actionStart(getActivity(),news.getTitle(),news.getContent());
                   }
               }
           });
           return holder;
       }

       public void onBindViewHolder(ViewHolder holder,int position){
              News news=mNewsList.get(position);
              holder.newsTitleText.setText(news.getTitle());
       }

       @Override
       public int getItemCount() {
           return mNewsList.size();
       }
   }
    @Override
    public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
      View view=inflater.inflate(R.layout.news_title_frag,container,false);
      RecyclerView newsTitleRecyclerView=(RecyclerView) view.findViewById(R.id.news_title_recycler_view);
        LinearLayoutManager layoutManager=new LinearLayoutManager(getActivity());
        newsTitleRecyclerView.setLayoutManager(layoutManager);
        NewsAdapter adapter=new NewsAdapter(getNews());
        newsTitleRecyclerView.setAdapter(adapter);
      return view;
    }

    private List<News> getNews() {
       List<News> newsList=new ArrayList<>();
       for(int i=0;i<=50;i++){
           News news=new News();
           news.setTitle("This is news title "+i);
           news.setContent(getRandomLengthContent("This is news content"+i+"."));
           newsList.add(news);
       }
       return newsList;
    }

    private String getRandomLengthContent(String content) {
        Random random=new Random();
        int length=random.nextInt(20)+1;
        StringBuilder builder=new StringBuilder();
        for(int i=0;i<length;i++){
            builder.append(content);
        }
        return builder.toString();
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        if(getActivity().findViewById(R.id.news_content_layout) !=null){
            isTwoPane=true;
        }else {
            isTwoPane=false;
        }
    }
}
